Whats even funnier.....I tried to balance mine right side up too!!!..;0).....doh!!......upside down just like the pic/manual says.I have @ 10 flights on my 4* now.The .46 is arguably too much engine for that light of a plane,take it easy until you get a few runs in to see how she handles.Responds alot quicker than the Super*.My .46 wants to idle too fast and I have had to adjust the low speed some,but after @ a gallon of fuel ran thru it is starting to settle down.Make a few runs then go back to the Super* and you will get the full effect of how much more fun flying is going to get.Good luck!!